Syringe



(No Model.)

J. R. HALL, Jr.

SYRINGE. l

Patented Sept. 10, 1895.

t5 inge.

UNrrnD Sfrnrnsa JOHN RILEY HALL, JR., OF FORT RECOVERY, OlllO.

SYRINGE.

SPECIFICATON forming part of Letters Patent blo. 546,148, datedSeptember 10, 1895.

i Application filed September 20, 1894. Serial No. 523,616.V (No model.)

To @ZZ whom it may concern:

Be it known that I, JOHN RILEY HALL, J r.,

a citizen of the United States, and a resident of Fort Recovery,in thecounty of Mercer and 5 State of Ohio, have invented certain new anduseful Improvements in Syringes; and I do hereby declare that thefollowing is a full, clear, and exact description of the invention,which will enable others skilled in the art to which it appertains tomalte and use the same, reference being had to the accompanyingdrawings, which form a part of this specification, and in whichm Figurel is a side view of myimproved syr- Fig. 2 is a longitudinal sectionalview of the same. Fig. 3 is a cross-section on line .fr illustrating thecut-off stop and slot. Fig. e is a sectional detail view on an enlargedscale, showing the combination and arrangement of 'the inside nozzle andoutside cut-oni as the parts appear when the nozzle is closed and Fig. 5is a sectional detail View of the same parts in their relative positionwhen the nozzle is open.

Like letters of reference designate corresponding parts in all theiigures.

rlhis invention relates to impregnating-syringes for breeding purposes,used for the arti `ficial introduction of' the male semen intothe wombof the female animal, and has for its object to prevent access of air tothe syringe and to the womb of the female animal to loe impregnatedduring the delicate operation of introducing the semen, experiencehaving 5 demonstrated that atmospheric air in contact" with the malesemen during and after its introduction into the womb will destroy itsvitality.

lVith this object in view my improvement consists in the combination,with the barrel and nozzle of the syringe, of a peculiarly-constructedair-tight cut-off, as will be hereinafter more 'fully described andclaimed.

In the accompanying drawings, the refer- 5 ence-letter A denotes thebarrel of my improved syringe, A the nozzle of the same,

B the piston or plunger, O the piston-rod, and

D the handle of the same. Instead of having the orifice d in the centerof the nozzle, as usual, it is placed on one side, as shown more clearlyin Figs. e and 5, so as to be much nearer one side of the nozzle thanthe other. The barrel A, with its nozzle A', are inserted into anotherclosely-fitting barrel E of corresponding shape, and also provided witha nozzle E', having an orifice c on one side of its fiat or slightlyconvex point. Near its other or open end the barrel Elias a transverseslot F, into which projects a small screw head or studf, fastened in andprojecting from the inside barrel A, and forming a stop or limit for theturning or partial rotation of the exterior cut-off barrel E upon theinterior syringe-barrel A. At one end of the slot 'F is marked upon theexterior barrel the letter O, and at the other end the letter S.

From the foregoing description, taken in connection with the drawings,the operation of this device will readily be understood. The orifices aand c are so located and arranged relative to each other that when theoutside barrel is turned or partly rotated upon the'inside barrel untilstopped by the stud f striking against that end of slot F marked 0, thetwo nozzle-orifices will coincide or register with each other, asillustrated in Fig. 5, while by turning the outside barrel one-half arevolution in the opposite direction, till stud f strikes against theopposite end of the slot marked SX the two orifices a and e will bediametrically opposite to each other in the relative positionillustrated in Fig. 4, thus closing the inner orifice o. air-tight.

To use the syringe the nozzle A is opened and the semen drawn up intothe syringe by withdrawing the plunger. After it has heen charged thenozzle-orifice a is closed in the manner described, and the syrin ge iscarefully introduced into the womb of the mare, cow, or other femaleanimal to beimpregnated for breeding. The cut-off barrel is then againturned so as to open the inner orifice, as shown in Fig. 4, and thecontents of the syringe are injected intothe womb hy pressing theplunger home with a quick even pressure.

Having thus described my invention, I claim and desire to secure byLetters Patent of the United States A syringe consisting of the barrelA, provided near its upper end with a stud f, and having a cylindricalnozzle A provided with 'an orifice in its point end at one side of theIOC or register with the oriee in the nozzle A', 1o

'substantially as specified.

In testimony that I claim the foregoing :is my own I have hereuntoaffixed my signature in presence of two Witnesses.

JOHN RILEY HALL, JR.

Witnesses:

CEAS. ESSELTUM, WM. B. DOYLE.

